If a particle is dropped from a height h (h << R) into the tunnel, then choose the correct option.

Q: If a particle is dropped from a height h (h << R) into the tunnel, then choose the correct option.

(a) particle will perfect SHM

(b) particle will not perform SHM

(c) particle will perform periodic motion

(d) Both (b) and (c)

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Ans: (d)